CN212614817U - Deployable dolly is consolidated in outer support of tunnel portal - Google Patents

Abstract

The utility model discloses a tunnel portal outer support reinforcement deployable dolly, including supporting seat, omniwheel, connecting plate, connecting rod, spur gear group, bracing piece, a backplate, telescopic bracket, horizontal bracing piece and automobile body support. The device is controlled to be opened or closed by a group of gears which are meshed with each other. After the device moves out of the tunnel portal, the two supporting seats move towards two sides respectively, the whole adjusting process is flexible, and the device is suitable for self-adaptive adjustment of the widths of different tunnel portals. And (4) after the supporting rod extends to meet the width requirement of the tunnel portal, fixedly connecting the supporting plate at the top of the tunnel in a supporting way. After the supporting rod extends, the supporting rod is fixed by the telescopic support, so that the supporting rod is prevented from inclining or contracting. After the supporting component is installed, the vehicle body bracket is unfolded, and the whole device is fixed to prevent displacement and deviation. The trestle structure is formed by paving wood boards and the like on the transverse supporting seat and the connecting plate, so that the transportation and construction of the construction device are facilitated.

Description

Deployable dolly is consolidated in outer support of tunnel portal

Technical Field

The utility model relates to a reinforced (rfd) device is strutted outward to entrance to a cave when being applicable to tunnel excavation belongs to civil engineering and consolidates technical field.

Background

The tunnel portal project is a project for a tunnel to enter and exit a mountain, and comprises a portal, a retaining wall, a tunnel portal side slope project, a slope elevation project, a tunnel portal groove and the like.

The open cut tunnel engineering is a structural engineering of firstly open cutting and then building a tunnel in the tunnel, and is generally different from a section form of an underground cut tunnel in that a plurality of straight walls are adopted. The open cut tunnel can be a part of the tunnel body, and can also be a part of the tunnel with the opening being connected. In the existing inclined cut type hole door, a hole engineering with about 10-20m is generally provided.

The tunnel portal covering layer is thin, the self-supporting capability of surrounding rocks is weak, and some self-supporting capabilities are even not provided. Therefore, the most important thing in the construction of the opening section is to improve the self-supporting capability of the surrounding rock and ensure the excavation and the subsequent operation. Particularly, in the sections which are easy to slip and collapse, such as shallow buried areas, broken areas, landslides, collapse areas, weak areas, rich underground water, weak interlayers and the like, comprehensive pre-reinforcement measures are needed.

The traditional tunnel portal external support has the problems of complex installation, time and labor waste and the like, and installation materials are not easy to carry and occupy too large area, so that a portal external support reinforcing device which is more convenient to install and disassemble is needed to be provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at protects the not scheduling problem of wasting time and energy and precision in the reinforcing apparatus installation to tunnel portal outer, when considering tunnel portal outer support to consolidate the operation, utilize the structural feature and the concrete construction requirement of portal bearing, carry out reasonable structural layout to reinforcing apparatus, can consolidate tunnel portal outer support labour saving and time saving to improve reinforced work efficiency.

In order to realize the purpose, the utility model discloses a technical scheme for a tunnel portal is outer to be protected and consolidates deployable dolly, including supporting seat 1, omniwheel 2, connecting plate 3, connecting rod 4, spur gear group 5, bracing piece 6, supporting plate 7, telescopic bracket 8, horizontal bracing piece 9 and automobile body support 10.

Two supporting seats 1 symmetrical parallel arrangement, every supporting seat 1 is equipped with omniwheel 2 all around, connects through connecting plate 3 between two supporting seats 1. Each supporting seat 1 is connected with the connecting plate 3 through a connecting rod 4, one end of each connecting rod 4 is hinged to the supporting seat 1, the other end of each connecting rod 4 is provided with a straight gear 5, and the central shaft of each straight gear 5 is hinged to the connecting plate 3; straight gears 5 corresponding to connecting rods 4 on the two supporting seats 1 are meshed with each other; one side of each supporting seat 1 is vertically fixed with a supporting rod 6, and the two supporting rods 6 are connected with a supporting and protecting plate 7 at the upper part of the tunnel portal through bolts; the supporting seat 1 is provided with a telescopic support 8, the telescopic support 8 is used for locking the supporting rod 6, the locking supporting rod 6 is guaranteed to be vertical, and the tunnel portal is effectively supported.

Further, be equipped with automobile body support 10 on the supporting seat 1, the bottom of automobile body support 10 is equipped with the skid, through the skid increase with the lifting surface area on ground, guarantees that the device structure is firm.

Furthermore, a locking hole is formed in the outer side of the sleeve of the supporting rod 6, a plurality of locking holes are distributed in parallel on the telescopic rod, and the locking holes are locked through pins at the end part of the telescopic support 8. The height adjustment of the telescopic rod on the sleeve is realized through the matching position of the locking hole.

Furthermore, after the trolley structure is unfolded and supported, a transverse supporting rod can be arranged according to the width of the two supporting seats; install horizontal bracing piece 9 on two supporting seats 1, can place plank etc. and form the landing stage structure on horizontal bracing piece 9 and the connecting plate 3, make things convenient for interim construction equipment's transportation.

Compared with the prior art, the device adopts a group of gears meshed with each other for control in the unfolding or closing process, so that the unfolding is smooth and stable, and the resistance is reduced. The device firstly moves to the outside of a tunnel portal in a folded state, and a large hub of the omnidirectional wheel rolls in the process; after the device moves out of the tunnel portal, the device is unfolded, the two supporting seats move towards two sides respectively, the small hubs of the omnidirectional wheels roll in the process, and the whole adjusting process is flexible and suitable for self-adaptive adjustment of the widths of different tunnel portals. And (4) after the supporting rod extends to meet the width requirement of the tunnel portal, fixedly connecting the supporting plate at the top of the tunnel in a supporting way. After the supporting rod extends, the supporting rod is fixed by the telescopic support, so that the supporting rod is prevented from inclining or contracting. After the supporting component is installed, the vehicle body bracket is unfolded, and the whole device is fixed to prevent displacement and deviation. The trestle structure is formed by paving wood boards and the like on the transverse supporting seat and the connecting plate, so that the transportation and construction of the construction device are facilitated.

Drawings

Fig. 1 is a schematic elevation structure of the present invention.

Fig. 2 is a schematic bottom structure diagram of the present invention.

Fig. 3 is a schematic view of the folding structure of the present invention.

In the figure: 1. supporting seat, 2, omni wheel, 3, connecting plate, 4, connecting rod, 5, spur gear set, 6, supporting rod, 7, supporting plate, 8, telescopic bracket, 9, transverse supporting rod, 10 and vehicle body bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of an exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

As shown in fig. 1-3, the utility model discloses a technical scheme be a can fold stack solid device suitable for tunnel portal is strutted outward, but folding chassis comprises parts such as supporting seat 1, omniwheel 2, connecting plate 3, connects through connecting rod 4, spur gear group 5 between supporting seat 1 and the connecting plate 3 to carry out the chassis through horizontal bracing piece 9 and expand the back fixed. After the chassis expandes, the bracing piece 6 extends, reaches the height of tunnel entrance to a cave, struts the ground of tunnel entrance to a cave both sides, then at the top installation backplate 7 of both sides bracing piece 6, struts the ground of tunnel entrance top. After the supporting rod 6 extends, the supporting rod 6 is fixed by the telescopic bracket 8, so that the supporting rod 6 is prevented from inclining and contracting. After the support members are installed, the body frame 10 is unfolded to fix the entire apparatus, thereby preventing displacement and deviation.

The two supporting seats 1 are designed in a mirror image mode and are distributed on two sides of the base plate; two omnidirectional wheels 2 are arranged on the supporting seat 1, and a plurality of vertical small hubs are distributed on a large hub of each omnidirectional wheel 2 and can move leftwards or rightwards while moving forwards or backwards. The device firstly moves to the outside of the tunnel portal in a folded state, and the large hub of the omnidirectional wheel 2 rolls in the process; after the device moves out of the tunnel portal, the device is unfolded, the two supporting seats 1 move towards two sides respectively, and the small hubs of the omnidirectional wheels 2 roll in the process.

By adopting the omnidirectional wheel 2, the friction force between the wheels and the ground in the unfolding process of the device can be effectively reduced, and the working efficiency is improved. The two supporting seats 1 are connected and fixed through a connecting plate 3, a connecting rod 4 and a spur gear set 5. The two ends of the connecting rod 4 can rotate around the shafts on the supporting seat 1 and the connecting plate 3 respectively.

The connecting rods 4 are connected with the straight gear set 5, the gears in the straight gear set 5 are meshed to enable the connecting rods 4 on two sides of the device to be always in a symmetrical state, and it is further guaranteed that the two supporting seats 1 are symmetrically distributed about the connecting plate 3, and the central axes are parallel. Thereby ensuring the stability of the whole device. The bracing piece 6 divide into sleeve and telescopic link, and the sleeve can slide in the telescopic link, according to the height of tunnel entrance to a cave and the nimble height-adjusting of bracing piece 6 of specific construction conditions. The supporting rod 6 is tightly attached to a supported surface of the tunnel portal after being erected, if a gap exists, a supporting plate 7 is arranged between the supporting rod 6 and the supported surface, and therefore it is guaranteed that pressure of the supporting rod 6 can be transmitted to rock soil outside the tunnel portal, and a good supporting effect is achieved. The supporting and protecting plate 7 can be fixed on the supporting rod 6 to fix rock soil at the top of the tunnel portal. After the support rod 6 is erected, the support rod 6 is fixed by the telescopic rod to form a triangular stable shape, and the support rod 6 is prevented from deviating. The telescopic link can stretch out and draw back, can be according to the length of concrete construction scene adjustment telescopic link to and the position of telescopic link and 6 joint points of bracing piece. And a skid is arranged below the vehicle body support 10, so that the landing area can be increased, the friction force is improved, and the stability of the whole device is enhanced.

The sleeve outside of bracing piece 6 is equipped with a locking hole, and the last side by side distribution of telescopic link has a plurality of locking holes, and the locking hole advances to lock through the pin of telescopic bracket 8 tip. The height adjustment of the telescopic rod on the sleeve is realized through the matching position of the locking hole. The support rod 6 is fixed on the support base 1 through welding or bolt connection.

The construction site is rugged and uneven, the set trestle structure should be stable and safe firstly, the transverse support rod is movably connected with the clamping groove of the trestle, and the construction convenience is guaranteed.

Claims (5)

1. The utility model provides a tunnel portal outer support is consolidated and is expanded dolly which characterized in that: the two supporting seats (1) are symmetrically arranged in parallel, and the two supporting seats (1) are connected through a connecting plate (3); each supporting seat (1) is connected with the connecting plate (3) through a connecting rod (4), one end of each connecting rod (4) is hinged to the supporting seat (1), the other end of each connecting rod (4) is provided with a straight gear (5), and the central shaft of each straight gear (5) is hinged to the connecting plate (3); straight gears (5) corresponding to connecting rods (4) on the two supporting seats (1) are mutually meshed; one side of each supporting seat (1) is vertically fixed with a supporting rod (6), and the two supporting rods (6) are connected with a supporting and protecting plate (7) at the upper part of the tunnel portal through bolts; the supporting seat (1) is provided with a telescopic support (8), the telescopic support (8) is used for locking the supporting rod (6), the locking supporting rod (6) is guaranteed to be vertical, and the supporting seat supports a tunnel portal.

2. The expandable trolley for supporting and reinforcing the outer part of the tunnel portal according to claim 1, wherein: an omnidirectional wheel (2) is arranged around each supporting seat (1).

3. The expandable trolley for supporting and reinforcing the outer part of the tunnel portal according to claim 1, wherein: be equipped with automobile body support (10) on supporting seat (1), the bottom of automobile body support (10) is equipped with the skid, through the skid increase with the lifting surface on ground, guarantees that the device structure is firm.

4. The expandable trolley for supporting and reinforcing the outer part of the tunnel portal according to claim 1, wherein: the outer side of the sleeve of the support rod (6) is provided with a locking hole, a plurality of locking holes are distributed on the telescopic rod in parallel, and the locking holes are locked through pins at the end part of the telescopic support (8).

5. The expandable trolley for supporting and reinforcing the outer part of the tunnel portal according to claim 1, wherein: install horizontal bracing piece (9) on two supporting seats (1), can place the plank on horizontal bracing piece (9) and connecting plate (3) and constitute the landing stage structure.

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